Method and apparatus of performing authentication

Abstract

A processor-implemented method of performing authentication includes obtaining a first biometric information of a user according to a first modality; calculating a first score based on the first biometric information; filtering the first score; determining whether the filtered first score satisfies a second condition; and selectively, based on a result of the determining, authenticating the user based on the first score and a first condition corresponding to the first modality. The second condition is different from the first condition.

What is claimed is: 
     
       1. A processor-implemented authentication method, comprising: obtaining a first biometric information of a user according to a first modality; calculating a first score based on the first biometric information;
 filtering the first score; 
 determining whether the filtered first score satisfies a second condition; and 
 selectively, based on a result of the determining, authenticating the user based on the 
 
       first score and a first condition corresponding to the first modality,
 wherein the second condition is different from the first condition, the first condition is a first score threshold, and the second condition is a filtered first score threshold. 
 
     
     
       2. The method of  claim 1 , wherein the first modality is an iris modality of the user. 
     
     
       3. The method of  claim 1 , wherein the first score is a score of a first frame of a plurality of frames corresponding to the first modality, and the filtering of the first score comprises filtering the first score based on scores of frames adjacent to the first frame. 
     
     
       4. The method of  claim 1 , wherein the first score comprises a score calculated based on a combination of a plurality of features of the first modality. 
     
     
       5. The method of  claim 1 , wherein the performing of the authentication using the first modality comprises:
 determining, in response to the first score satisfying the second condition, whether the first score satisfies the first condition; and 
 validating the authentication in response to the first score satisfying the first condition. 
 
     
     
       6. A processor-implemented method of performing authentication, comprising:
 obtaining a first biometric information of a user according to a first modality among modalities; 
 calculating a first score based on the first biometric information; 
 determining whether the first score satisfies a first condition corresponding the first modality, the first condition being a condition for an exclusive authentication according to the first modality; 
 based on a result of the determining, filtering the first score, and 
 selectively, based on whether the filtered first score satisfies a second condition, authenticating the user based on consideration of plural scores respectively calculated according to plural modalities for a complex authentication, 
 wherein the second condition is different from the first condition for a primary authentication of the first modality, the first condition is a first score threshold, and the second condition is a filtered first score threshold. 
 
     
     
       7. The method of  claim 6 , wherein in response to the determining indicating that the first score satisfies the first condition, authenticating the user. 
     
     
       8. The method of  claim 7 , wherein the first modality is an iris modality of a user. 
     
     
       9. The method of  claim 8 , wherein the complex authentication is any two or more of a fingerprint modality, an iris modality, and a face modality of a user. 
     
     
       10. The method of  claim 6 , wherein the first score is a score of a first frame of a plurality of frames corresponding to the first modalities, and
 the filtering of the first score comprises filtering the first score based on scores of frames adjacent to the first frame. 
 
     
     
       11. The method of  claim 6 , wherein the first score comprises a score calculated based on a combination of a plurality of features of the first modality. 
     
     
       12. The method of  claim 6 , wherein the filtering of the first score comprises:
 performing the primary authentication using the first score; and 
 filtering the first score in response to the primary authentication failing. 
 
     
     
       13. The method of  claim 7 , further comprising:
 calculating a second score based on a second biometric information of the user according to a second modality different from the first modality and filtering the second score, 
 wherein the combination of the modalities comprises the first modality and the second modality. 
 
     
     
       14. The method of  claim 13 , wherein the authenticating of the user based on consideration of the plural scores respectively calculated according to the plural modalities comprises:
 calculating a third score by fusing the first score and the second score; and 
 performing the complex authentication based on whether the third score satisfies a third condition for the complex authentication. 
 
     
     
       15. The method of  claim 13 , wherein the authenticating of the user based on consideration of the plural scores respectively calculated according to the plural modalities comprises:
 performing, in response to the filtered first score satisfying the second condition, the authentication based on whether at least one of the first score and the second score satisfies the first condition. 
 
     
     
       16. The method of  claim 13 , wherein the authenticating of the user based on consideration of the plural scores respectively calculated according to the plural modalities comprises:
 performing, in response to the filtered first score satisfying the second condition, the authentication based on whether at least one of the filtered first score and the second score satisfies the first condition. 
 
     
     
       17. The method of  claim 13 ,
 wherein the authenticating of the user based on consideration of the plural scores respectively calculated according to the plural modalities comprises: 
 performing, in response to the filtered first score satisfying the second condition, the authentication based on whether at least one of the first score and the filtered second score satisfies the first condition. 
 
     
     
       18. The method of  claim 13 ,
 wherein the authenticating of the user based on consideration of the plural scores respectively calculated according to the plural modalities comprises: 
 performing, in response to the filtered first score satisfying the second condition, the authentication based on whether at least one of the filtered first score and the filtered second score satisfies the first condition. 
 
     
     
       19. The method of  claim 13 ,
 wherein the authenticating of the user based on consideration of the plural scores respectively calculated according to the plural modalities comprises: 
 performing the authentication based on whether a combination of the filtered first score and the filtered second score satisfies the second condition or whether the filtered second score satisfies the second condition. 
 
     
     
       20. The method of  claim 19 , wherein, in response to the combination of the filtered first score and the filtered second score satisfying the second condition or in response to the filtered second score satisfying the second condition, the performing of the authentication comprises:
 performing the authentication based on whether the non-filtered first score and the second score satisfy the first condition. 
 
     
     
       21. The method of  claim 19 , wherein, in response to the combination of the filtered first score and the filtered second score satisfying the second condition or in response to the filtered second score satisfying the second condition, the performing of the authentication comprises:
 performing the authentication based on whether the filtered first score and the second score satisfy the first condition. 
 
     
     
       22. The method of  claim 19 , wherein, in response to the combination of the filtered first score and the filtered second score satisfying the second condition or in response to the filtered second score satisfying the second condition, the performing of the authentication comprises:
 performing the authentication based on whether the first score and the filtered second score satisfy the first condition. 
 
     
     
       23. The method of  claim 19 , wherein, in response to the combination of the filtered first score and the filtered second score satisfying the second condition or in response to the filtered second score satisfying the second condition, the performing of the authentication comprises:
 performing the authentication based on whether the filtered first score and the filtered second score satisfy the first condition. 
 
     
     
       24. The method of  claim 6 , wherein the modalities include any one or any combination of any two or more of a face image, a fingerprint image, an iris image, a vein image, a palm-line image, a sign, a voice, a gait, a deoxyribonucleic acid (DNA) structure of a user. 
     
     
       25. A non-transitory computer-readable storage medium storing instructions that, when executed by a processor, cause the processor to perform the method of  claim 6 . 
     
     
       26. An apparatus for performing authentication, the apparatus comprising:
 a processor configured to: 
 obtain a first biometric information of a user according to a first modality; 
 calculate a first score based on the first biometric information; 
 filter the first score; 
 determine whether the filtered first score satisfies a second condition; and 
 selectively, based on a result of the determine, authenticate the user based on the first score and a first condition corresponding to the first modality, 
 wherein the second condition is different from the first condition, the first condition is a first score threshold, and the second condition is a filtered first score threshold. 
 
     
     
       27. The apparatus of  claim 26 , wherein the first modality is an iris modality of the user. 
     
     
       28. An apparatus for performing authentication, the apparatus comprising:
 a processor configured to: 
 obtain a first biometric information of a user according to a first modality among modalities; 
 calculate a first score based on the first biometric information; 
 determine whether the first score satisfies a first condition corresponding the first modality, the first condition being a condition for an exclusive authentication according to the first modality; 
 based on a result of the determine, filter the first score and 
 selectively, based on whether the filtered first score satisfies a second condition, authenticate the user based on consideration of plural scores respectively calculated according to plural modalities for a complex authentication, 
 wherein the second condition is different from the first condition for a primary authentication of the first modality, the first condition is a first score threshold, and the second condition is a filtered first score threshold. 
 
     
     
       29. The apparatus of  claim 28 , wherein the first modality is an iris modality of a user, and the complex authentication is any two or more of a fingerprint modality, an iris modality, and a face modality of a user.